Denim brings nothing for the Lumia 920. Can you expect Denim? I'm not sure.

Owners of newer models should though.

Windows Phone 8.1 Update 1 and Lumia Denim is veyr minor and won't magically fix battery woes. (sign up for the Preview for Developers program if you want it because Lumia Denim doesn't really do anything more than Cyan as far as you're concerned)